how can search first 10 character of Subject in IMAP

Question

Dear Sir/Madam

I want search first 10 characters of suject in IMAP, How to do this?

thanks

Answer 1

It is not possible, the IMAP protocol does not have such functionality.

This is what RFC 9051 says:

SUBJECT <string>
Messages that contain the specified string in the envelope structure's SUBJECT field.

The suggested way is to fetch all the messages with the given search criteria and then filter out unwanted messages locally (at the client).